The Titanium Field Guide

Seiko Brightz World Time SAGZ105 (Titanium)

Archive · used only

The Seiko Brightz World Time SAGZ105 (Titanium) is a discontinued dress watch with a Titanium (Diamond Shield hard coating) case, finished with diamond shield hard coating. No longer offered new; listed here as an archive reference for the used market.

Titanium dress watchesUnder 11 mm thickSolarWorldtimer
Titanium
Titanium (Diamond Shield hard coating)
Water resistance
100 m
Type
Dress
Price
– · Y110,000 at launch (JDM); secondary market only
Case diameter
38.5 mm
Thickness
9.2 mm
Lug-to-lug
45.7 mm
Origin
Japan
Movement
Solar radio-controlled quartz (world time)
Caliber
Seiko Cal. 7B27
Complications
Worldtimer, Date
Case shape
Round
Case colour
Natural / grey
Finish technology
Surface hardening
Surface treatment
Diamond Shield hard coating
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Crocodile leather strap
Crystal
Sapphire, super-clear coating (curved)
Display back
No
Dial
Black
Dial colours
Black
Availability
No longer offered
Status
No longer in production (discontinued JDM Brightz)
Not published
Reference, Weight, Power reserve, Caseback, Titanium bracelet, Lume Help verify
Medium confidence Verified Jun 2026 Source: SakuraWatches (SAGZ105, Titanium Hard Coating) / Yodobashi (SAGZ105) Maker / listing ↗ Suggested by u/StudioZanello
Facts are free to cite with a link.
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Frequently asked questions

What grade of titanium is the Seiko Brightz World Time SAGZ105 (Titanium)?

The Seiko Brightz World Time SAGZ105 (Titanium) has a Titanium (Diamond Shield hard coating) case. It is recorded at medium confidence pending a maker-stated grade.

What size is the Seiko Brightz World Time SAGZ105 (Titanium)?

It is 38.5 mm in diameter, 9.2 mm thick, 45.7 mm lug to lug, and water resistant to 100 m.

How much does the Seiko Brightz World Time SAGZ105 (Titanium) cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market.

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